基于JAVA开发的血压实时监控app源码+项目说明.7z

package com.ivan.healthcare.healthcare_android.view.chart; import android.animation.ValueAnimator; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Path; import android.util.AttributeSet; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import com.ivan.healthcare.healthcare_android.AppContext; import com.ivan.healthcare.healthcare_android.view.chart.provider.ChartAdapter; import com.ivan.healthcare.healthcare_android.view.chart.theme.ChartTheme; import com.ivan.healthcare.healthcare_android.util.Compat; import java.util.ArrayList; /** * <h3>图表抽象类</h3> * <p>Created by Ivan on 16/3/19.</p> * <p>该抽象类已经实现了绘制图表坐标系，图例，x轴和y轴的标签的工作，实现类只需要绘制数据即可。</p> * <p>绘制数据时，实现类只需要调用Chart类提供的api绘制数据即可，不用关心转换过程。</p> * <p>绘制数据有一些这样的api：<p/> * <p>{@link #drawLine(Canvas, Paint, float, float, float, float, boolean)}</p> * <p>{@link #drawPoint(Canvas, Paint, float, float, float)}</p> * <p>{@link #drawRect(Canvas, Paint, float, float, float, float)}</p> * <P>{@link #drawRect(Canvas, Paint, float, float, float)}</P> * <p/> * <p>实现该图表类的时候，需要注意一些预定义的规则。</p> * <p>1. 图表的横坐标从编程意义上来说，其步进为1，从0开始，只有正坐标；</p> * <p>2. Chart类提供了两个变量及其set与get方法 * {@link #getAnimateRate()}，{@link #getAnimateType()}，{@link #setAnimateRate(float)}，{@link #setAnimateType(int)} * 来作为动画绘图的依据。做动画时调用者可以自行定义其规则并调用之，也可以自己实现一套变量。 * 实现动画应该实现Chart类的抽象动画方法。 * 动画类型预定义有两种：{@link #ANIMATE_X_FLAG}和{@link #ANIMATE_Y_FLAG};</p> * * @see LineChart * @see StackedColumnChart * @see ParallelColumnChart */ public abstract class Chart extends View { protected final int ANIMATE_X_FLAG = 1; protected final int ANIMATE_Y_FLAG = 0; protected final int ANIMATE_NON_FLAG = -1; protected int animateType = ANIMATE_NON_FLAG; /** * 动画的计时器 */ protected float animateRate = 1.f; protected ValueAnimator valueAnimator; private final int X_LABEL_TEXT_SIZE = AppContext.dp2px(11); private final int Y_LABEL_TEXT_SIZE = AppContext.dp2px(13); private final int X_LABEL_LINE_SPACE = AppContext.dp2px(2); public final int MODE_LINE_CHART = 0x31; public final int MODE_COLUMN_CHART = 0x32; /** * 图表种类 */ private int mode; /** * 图表默认间距 */ private int gridGap = AppContext.dp2px(30); /** * x轴标签高度 */ private final int xLabelHeight = AppContext.dp2px(35); /** * y轴标签宽度 */ private final int yLabelWidth = AppContext.dp2px(43); /** * x轴标签上页距 */ private final int xLabelMargin = AppContext.dp2px(20); /** * 图表上页距 */ private final int topMargin = AppContext.dp2px(10); /** * 高亮标签边距 */ private final int highlightMargin = AppContext.dp2px(3); /** * 高亮标签圆角弧度 */ private final int circleRadius = AppContext.dp2px(2.5f); /** * y轴右侧与图表坐标系的水平距离 */ private final int yLabelDistanceToChart = AppContext.dp2px(5); /** * 图例的属性 */ private final float LINE_WIDTH = AppContext.dp2px(2.5f); private final float LINE_LENGTH = AppContext.dp2px(25); private final float CIRCLE_RADIUS = AppContext.dp2px(2.5f); private final float RECT_WIDTH = AppContext.dp2px(25); private final float RECT_HEIGHT = AppContext.dp2px(10); private final float TEXT_SIZE = AppContext.dp2px(13); private final float OFF_SET = AppContext.dp2px(10); private final static int LEGEND_HEIGHT = AppContext.dp2px(25); private final int LEFT_MARGIN = AppContext.dp2px(10); /** * 是否自适应调整图表Y轴最大值和分格 */ public Boolean selfAdaptive = true; private Paint paint; /** * x轴分割线数量 */ private int xGridLineCount; /** * y轴分割线数量 */ private int yGridLineCount; /** * 图表宽度 */ private int chartWidth = -1; /** * y轴标签 */ private ArrayList<Float> yLabels; /** * y轴最大/最小值 */ private float maxYValue; private float minYValue; /** * y轴标签格式化工具 */ private YAxisValueFormatter yf = new YAxisValueFormatter(){ @Override public String yValuesString(float v) { return v+""; } }; /** * 列宽 */ private float rectWidth; /** * view宽度 */ private float viewWidth; /** * view高度 */ private float viewHeight; /** * 所有图例占据的空间高度 */ private float allLegendsHeight; /** * 图表高度 */ private float chartHeight; /** * 列高 */ private float rectHeight; /** * 行宽 */ private float yLineSep; /** * 图表主题 */ private ChartTheme theme; /** * 背景颜色，优先于theme */ private int backgroundColor = 0; /** * 数据源适配器 */ private ChartAdapter mAdapter; /** * 检测滑动手势的监听器 */ private GestureDetector gestureDetector; /** * 滑动的偏移 */ private float scrollOffset; /** * 当前图表偏移 */ private float curOffset; private Context context; public Chart(Context context) { super(context); init(context); } public Chart(Context context, AttributeSet attrs) { super(context, attrs); init(context); } private void init(Context context) { this.context = context; paint = new Paint(); theme = new ChartTheme(context, ChartTheme.THEME_LIGHT); gestureDetector = new GestureDetector(context, new OnGestureDetector()); setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { getParent().requestDisallowInterceptTouchEvent(true); return gestureDetector.onTouchEvent(event); } }); scrollOffset = 0; curOffset = 0; } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { setMeasuredDimension(widthMeasureSpec, heightMeasureSpec); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); xGridLineCount = mAdapter.getXLabelsCount(); chartWidth = gridGap * xGridLineCount; rectWidth = gridGap; // view宽度 viewWidth = getWidth(); // view高度 viewHeight = getHeight(); // 图例占据的空间高度 allLegendsHeight = LEGEND_HEIGHT * mAdapter.getLegendCount(); // 图表高度 chartHeight = viewHeight - (mAdapter.drawXLabels()?(xLabelHeight):0) - topMargin - allLegendsHeight - xLabelMargin/2; // 列高 rectHeight = chartHeight; // 行宽 yLineSep = (chartHeight /((float)yGridLineCount-1.f)); drawChart(canvas); drawYAxis(canvas); drawLegends(canvas); } @Override public boolean onTouchEvent(MotionEvent e) { if (e.getActionMasked() == MotionEvent.ACTION_UP && e.getPointerCount() == 1) { curOffset += scrollOffset; scrollOffset = 0; return true; } return false; } /** * �